<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title></title>
    <script src="../js/vue.js"></script>
</head>
<body>
    <div id="root">
        <h1>今天天气很{{info}}</h1><br>
        <button @click="changeWeather">切换天气</button>
        <!-- @xxx中可以写一些简单的语句 -->
        <button @click="isHot = !isHot">切换天气二</button>
    </div>
    <script type="text/javascript">
        const vm = new Vue({
            el: "#root",
            data:{
                isHot: true
            },
            computed:{
                info(){
                    return this.isHot ? "炎热" : "凉爽"
                }
            },
            methods: {
                changeWeather(){
                    this.isHot = !this.isHot
                }
            },
        })
       
    </script>
</body>
</html>